So I saw website (deleted - not advertising worthless web entities for free) that makes and sell
accounts for social media. It is good to buy them or to make them yourself?
What if I'm old and don't understand something wouldn't it be easier for me to
just buy one account for cents ?

You don't buy social media accounts as everyone finds out you bought them and then has a lower opinion of you than they would have with a crappy social media account. You made an account on here so you can make a social media account for yourself.

Also the SOCIAL part of SOCIAL media means you will interact with people not just buy a ton of followers and think it will work to bring you in a ton of money for some reason.